KR102158505B1 - Air conditioner for vehicle - Google Patents

Abstract

The present invention relates to an air conditioner for a vehicle, and more particularly, in an air conditioner including a compressor, a main condenser, an expansion means, an evaporator, an air conditioning case, and a main blower, an external air inlet of the main blower at a lower side of the cowl top cover. A condenser module with an auxiliary condenser is installed so as to be connected to the main condenser to exchange heat through the auxiliary condenser with the refrigerant discharged from the main condenser and the outdoor air flowing into the outside air inlet, thereby using the main condenser as a main heating heat source. Heating performance can be improved by introducing heated air into the vehicle interior through the auxiliary condenser, and the auxiliary condenser is configured as a simplified module on the lower side of the cowl top cover to improve vehicle installation and common use. Because it is located outside of the engine room, it can prevent the inflow of contaminants in the engine room, and in the heating mode, it is possible to solve the condensation problem that occurs in the evaporator even in the outside temperature condition of 0℃ or less. About.

Description

Vehicle air conditioning system {AIR CONDITIONER FOR VEHICLE}

The present invention relates to an air conditioner for a vehicle, and more particularly, in an air conditioner including a compressor, a main condenser, an expansion means, an evaporator, an air conditioning case, and a main blower, an external air inlet of the main blower at a lower side of the cowl top cover. A condenser module with an auxiliary condenser is installed so as to be connected to the main condenser to exchange heat through the auxiliary condenser with the refrigerant discharged from the main condenser and the outdoor air flowing into the outside air inlet, thereby using the main condenser as a main heating heat source. It relates to an air conditioner for a vehicle capable of introducing heated air into a vehicle interior through an auxiliary condenser.

Typically, an air conditioner for a vehicle includes a cooling system for cooling the interior of a vehicle and a heating system for heating the interior of the vehicle. The cooling system is configured to cool the interior of the vehicle by exchanging air passing through the evaporator from the evaporator side of the refrigerant cycle with the refrigerant flowing inside the evaporator to cool, and the heating system is configured to cool the vehicle interior. It is configured to heat the interior of the vehicle by converting the air passing through the outside of the heater core into heat by exchanging heat with the coolant flowing inside the heater core.

The refrigeration cycle is generally, as shown in FIG. 1, a compressor (1) for compressing and delivering refrigerant, a condenser (2) for condensing high-pressure refrigerant delivered from the compressor (1), and a condenser. For example, an expansion valve (3) that restricts the refrigerant condensed and liquefied in (2), and the low-pressure liquid refrigerant throttled by the expansion valve (3) installed in the air conditioning case. An evaporator (4), which cools the air discharged into the vehicle interior by heat absorption by the latent heat of evaporation of the refrigerant by evaporating by exchanging heat with the air flowing inside is connected by a refrigerant pipe.

In recent years, the movement from conventional fossil fuel-based vehicles to eco-friendly vehicles (hybrid vehicles, electric vehicles, etc.) is accelerating.

In such eco-friendly vehicles, the biggest problem to be solved with the air conditioning system is that it was not difficult to achieve sufficient heating performance using heat generated from the engine in the case of conventional fossil fuel vehicles, but eco-friendly vehicles that do not have a large heat source such as an engine must secure the maximum heating source. In other words, the additional power required to secure a heating heat source eventually consumes the power of an eco-friendly vehicle, resulting in a direct connection to vehicle fuel economy. Therefore, it is intended to implement the maximum heating heat source using less power. This is also the biggest challenge now.

2 and 3 are views showing an example of an air conditioner used in an eco-friendly vehicle. First, FIG. 2 is an air conditioner to which a PTC heater 11 is applied, and the cooling water is heated with a PTC heater 11, and thus the heated cooling water Although it is a configuration in which a heating heat source is secured by circulating the heater core 12 in the air conditioning case 10, there is a problem in that the amount of power required for the PTC heater 11 is large.

3 is an air conditioner to which a heat pump system is applied, and briefly described, a compressor 30, an indoor heat exchanger 31, a first expansion means 32, an outdoor heat exchanger 34, and a second expansion means 35 ), an evaporator 36, and an accumulator 37, and a bypass line L is provided so that the refrigerant bypasses the second expansion means 35 and the evaporator 36 in the heating mode.

In addition, refrigerants such as a two-way valve 33 that allows the refrigerant to bypass the first expansion means 32 in the cooling mode, and a three-way valve 38 installed at a branch point of the bypass line L. Flow switching valves are installed.

Therefore, in the heating mode, the heat generated by the indoor heat exchanger (acting as a condenser) 31 installed inside the air conditioning case 20 is used as a heating heat source. In particular, the characteristic of this air conditioning system is the high efficiency (COP) of the air conditioning system. 2 or more) has the advantage of reducing power consumption when securing a heating heat source.

However, the air conditioner to which the conventional heat pump system is applied has a disadvantage in that a complex refrigerant flow switching valve configuration and additional configurations to prevent the outdoor heat exchanger (34) from forming as an evaporator in the heating mode are increased. .

It is an object of the present invention to solve the above problems in an air conditioning apparatus including a compressor, a main condenser, an expansion means, an evaporator, an air conditioning case, and a main blower, so that it is connected to the outside air inlet of the main blower at the lower side of the cowl top cover. By installing a condenser module with a built-in auxiliary condenser, the refrigerant discharged from the main condenser and the outdoor air flowing into the outdoor air inlet are exchanged through the auxiliary condenser, thereby using the main condenser as a main heating heat source while using the auxiliary condenser. Heating performance can be improved by introducing heated air into the vehicle interior, and the auxiliary condenser is configured as a simplified module on the lower side of the cowl top cover to improve vehicle installation and common use. Because it is located, it is possible to prevent the inflow of pollutants from the engine room into the interior, and in the heating mode, it is possible to solve the problem of condensation occurring in the evaporator even in the outside temperature condition of 0℃ or less, so that it is to provide an air conditioning system for a vehicle that can solve the disadvantages of the heat pump system. .

The present invention for achieving the above object is a compressor installed in a refrigerant circulation line, a main condenser, an expansion means, an evaporator, an air conditioning case in which the evaporator is built, and a blower fan installed therein. In an upstream side of the blower fan, a vehicle air conditioner comprising a main blower having an internal and external air inlet for introducing internal and external air, wherein the refrigerant circulation line between the main condenser and the expansion means is discharged from the main condenser. An auxiliary condenser for heat-exchanging the cooled refrigerant with the outside air flowing into the outside air inlet is installed, and at the outside air inlet side of the main blower, the outside air flowing in from the outside of the vehicle is guided to the outside air inlet, and the auxiliary condenser is embedded inside It characterized in that the module is installed.

In an air conditioning apparatus including a compressor, a main condenser, an expansion means, an evaporator, an air conditioning case, and a main blower, the present invention provides a condenser module having an auxiliary condenser installed at a lower side of the cowl top cover to be connected to the outside air inlet of the main blower. By installing the refrigerant discharged from the main condenser and external air flowing into the outside air inlet through the auxiliary condenser, the main condenser is used as the main heating heat source and the air heated through the auxiliary condenser is transferred into the vehicle interior. As it can flow in, heating performance and efficiency can be improved.

In addition, by configuring the auxiliary condenser as a simplified module on the lower side of the cowl top cover, it is possible to improve vehicle installation and use it, and as well as use the running wind, it is located outside the engine room, so that contaminants in the engine room enter the interior. Can also be prevented.

In addition, in the heating mode, it is possible to prevent condensation occurring in the evaporator even under outside temperature conditions of 0°C or less, and to reduce weight and manufacturing cost due to a simple overall configuration of the air conditioner, thereby solving the disadvantages of the heat pump system.

1 is a view showing a refrigeration cycle of a general vehicle air conditioner;
2 is a configuration diagram showing an air conditioning device used in a conventional eco-friendly vehicle,
3 is a configuration diagram showing another embodiment of an air conditioning apparatus used in a conventional eco-friendly vehicle.
4 is a block diagram showing a vehicle air conditioning apparatus according to the present invention,
5 is a block diagram showing a cooling mode of the vehicle air conditioner according to the present invention;
6 is a block diagram showing a heating mode of the vehicle air conditioner according to the present invention;
7 is a cross-sectional perspective view showing in detail the intake duct and the condenser module of the main blower in FIG. 4;
8 is a cross-sectional view showing a state of a cooling mode of a condenser module in the vehicle air conditioner according to the present invention;
9 is a cross-sectional view showing a state of a heating mode of a condenser module in the vehicle air conditioner according to the present invention;
10 is a cross-sectional view showing a state of a condenser module in a mild mode in the vehicle air conditioner according to the present invention;
11 is a cross-sectional view showing a case in which the vehicle air conditioner according to the present invention is embodied as a center mounting type;
12 is a perspective view showing another embodiment of a condenser module in the vehicle air conditioner according to the present invention;
13 is a plan view of FIG. 12;
14 is a side view of FIG. 12.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown, in the vehicle air conditioner according to the present invention, the compressor 100, the main condenser 110, the auxiliary condenser 120, the expansion means 130, and the evaporator 140 are sequentially in the refrigerant circulation line R. At this time, the evaporator 140 and the heater core 210 are installed in the air conditioning case 300, and a storage condenser is provided at the outside air inlet 422 side of the main blower 400 connected to the air conditioning case 300. A capacitor module 600 with a built-in 120 is installed and configured.

First, the compressor 100 is driven by receiving power from a power supply source (engine or motor, etc.), sucking in the low-temperature, low-pressure gaseous refrigerant discharged from the evaporator 140, compressing it, and discharging it in a high-temperature, high-pressure gaseous state. .

The main condenser 110 is a water-cooled heat exchanger, and heat-exchanges the high-temperature and high-pressure gaseous refrigerant compressed and discharged by the compressor 100 with cooling water to condense and discharge the liquid refrigerant.

The main condenser 110 supplies a heat source for heating air in the air conditioning case 300.

That is, the coolant heat-exchanged with the high temperature refrigerant in the main condenser 110 is circulated to the heater core 210 in the air conditioning case 300 to heat the air in the air conditioning case 300 to heat the interior of the vehicle.

Of course, in the drawing, only the structure for circulating the cooling water of the main condenser 110 to the heater core 210 is shown, but the heater core 210 is omitted and the main condenser 110 is replaced with the air conditioning case 300. It is also possible to install directly inside of the.

On the other hand, the main condenser 110 may use a well-known water-cooled heat exchanger structure, for example, a plate-type heat exchanger structure in which refrigerant passages and cooling water passages are alternately arranged. In addition, various types of water-cooled heat exchangers may be used. Can be used.

In addition, the main condenser 110 is connected to the heater core 210 in the air conditioning case 300 through a cooling water circulation line W, and the cooling water circulation line W includes a water pump for circulating cooling water ( 200) is installed.

In addition, a water cooling radiator 220 is installed in the cooling water circulation line W.

The water cooling radiator 220 is mainly used for cooling electric equipment (not shown) of a vehicle, and the connection structure with the electric equipment is omitted in the drawing.

Therefore, when the water pump 200 is operated, the cooling water circulating in the cooling water circulation line W heats the air flowing in the air conditioning case 300 while passing through the heater core 210. The cooling water that has passed through the water cooling radiator 220 flows to the main condenser 110, is heated by heat exchange with the refrigerant discharged from the compressor 100, and circulates back to the heater core 210.

On the other hand, the cooling water circulation line (W) is provided with a directional valve 230, it is possible to variously control the flow of the refrigerant. For example, in the cooling mode, the cooling water discharged from the water pump 200 can be changed to circulate the water cooling radiator 220 and the main condenser 110 by bypassing the heater core 210.

Of course, the coolant discharged from the water pump 200 may bypass the heater core 210 and the water cooling radiator 220 to circulate only the main condenser 110, or the water pump 200 After the discharged coolant passes through the heater core 210, the water cooling radiator 220 may be bypassed to circulate to the main condenser 110.

In this way, the cooling water heated by heat exchange with the high-temperature refrigerant in the main condenser 110 circulates along the cooling water circulation line W and exchanges heat with air through the heater core 210 and the water cooling radiator 220.

In addition, the expansion means 130 is installed in the refrigerant circulation line R to expand the refrigerant, and may be configured as an expansion valve or an orifice.

The expansion means 130 is installed in the refrigerant circulation line R between the auxiliary condenser 120 and the evaporator 140, and rapidly expands the liquid refrigerant discharged from the auxiliary condenser 120 through a throttling action to It is sent to the evaporator 140 in a wet state of low pressure.

The evaporator 140 is installed inside the air conditioning case 300 and cools the air by heat exchange between the refrigerant discharged from the expansion means 130 and the air in the air conditioning case 300.

Here, the air conditioning case 300 is provided with a cooling air passage (P1) in which the evaporator 140 is installed, a hot air passage (P2) in which the heater core 210 is installed, and the cold air passage (P1) and An air discharge port 320 is formed in the downstream of the mixing area MC where the hot air passage P2 is joined to discharge air into the vehicle interior.

As shown in the drawing, when the main blower 400 and the auxiliary blower 500 are respectively installed in the air conditioning case 300, the air blown from the main blower 400 passes through the cold air passage P1 and then air The air discharged through the discharge port 320 and blown from the auxiliary blower 500 is discharged to the air discharge port 320 after passing through the warm air passage P2.

In this way, the cold air passage P1 through which the air blown from the main blower 400 flows and the hot air passage P2 through which the air blown from the auxiliary blower 500 flows are defined in the air conditioning case 300. At this time, the cold air passage P1 and the warm air passage P2 are joined in the mixing area MC.

In addition, a temperature control door 350 for adjusting the opening degree of the cool air passage P1 is installed in the cold air passage P1 on the downstream side of the evaporator 140.

The temperature control door 350 is installed on the upper side of the heater core 210 to control the amount of cold air passing through the cold air passage P1, and the amount of cold air adjusted in this way is in the mixing area MC. It is mixed with warm air and discharged into the interior of the vehicle, thereby controlling the interior of the vehicle to an appropriate temperature.

The temperature control door 350 may have various types of doors such as a flat type door or a dome type door.

In addition, a first outlet 330 for discharging the air that has passed through the evaporator 140 to the outside and a first opening and closing door for opening and closing the first outlet 330 on the downstream side of the evaporator 140 of the cold air passage P1 331 is installed,

On the downstream side of the heater core 210 of the warm air passage P2, a second outlet 340 for discharging the air that has passed through the heater core 210 to the outside and a second opening and closing door for opening and closing the second outlet 340 (341) is installed.

The first opening/closing door 331 opens the first outlet 330 in the heating mode to discharge the cold air that has passed through the evaporator 140 to the outside through the first outlet 330. The second opening and closing door 341 closes the second outlet 340)

That is, in the heating mode, since the heat source of the main condenser 110 is used for heating, the refrigeration cycle continues to operate. Therefore, in the heating mode, unnecessary cold air passing through the evaporator 140 is passed through the first outlet 330. It is discharged to the outside. Of course, a part of the cold air may be supplied to the mixing area MC through the control of the temperature control door 350.

In addition, the second opening/closing door 341 opens the second outlet 340 in the cooling mode and discharges the hot air that has passed through the heater core 210 to the outside through the second outlet 340. .(At this time, the first opening and closing door 331 closes the first outlet 330)

That is, in the cooling mode, the hot air that has passed through the heater core 210 is discharged to the outside through the second outlet 340.

Of course, since the second opening and closing door 341 not only opens and closes the second outlet 340 but also controls the amount of warm air passing through the warm air passage P2, the second opening and closing door 341 can be controlled. Through this, a part of the warm air may be supplied to the mixing area MC.

In this way, the air that has passed through the evaporator 140 and the heater core 210 is introduced into the vehicle interior according to the external environment, and unnecessary air is discharged to the outside of the vehicle.

Meanwhile, heat dissipation through the heater core 210 is selectively performed as needed, and heat dissipation of the heater core 210 is controlled by the air volume of the auxiliary blower 500.

11 is a cross-sectional view showing the center mounting type of the vehicle air conditioning apparatus according to the present invention, as shown, the main blower 400 is connected to the upstream side of the cold air passage (P1) of the air conditioning case 300, the air conditioning case ( The auxiliary blower 500 is connected to the upstream side of the hot air passage P2 of 300).

At this time, the cold air passage (P1) and the hot air passage (P2) are partitioned by a partition wall 305, the evaporator 140 is installed in the cold air passage (P1), and a heater core (210) in the warm air passage (P2). Is installed.

In addition, the air volume of the cold air passage P1 is controlled by the main blower 400, and the air volume of the hot air passage P2 is controlled by the auxiliary blower 500.

A temperature control door 350 is installed at the point where the cold air passage P1 and the hot air passage P2 merge to control the temperature by adjusting the mixing amount of the cold air and the hot air.

In addition, a plurality of air outlets 320 are formed on the downstream side of the mixing region MC where the cold air and the warm air are mixed.

Meanwhile, a first outlet (not shown) and a first opening/closing door (not shown) are installed on the side of the cold air passage (P1) of the air conditioning case 300 to discharge the cold air that has passed through the evaporator 140 to the outside in the heating mode. A second outlet (not shown) and a second opening and closing door (not shown) are provided on the side of the hot air passage P2 of the air conditioning case 300 to discharge the hot air that has passed through the heater core 210 to the outside in the cooling mode. Installed.

In addition, the main blower 400 has a blowing fan 430 installed therein so as to blow air to the inlet side of the air conditioning case 300, and the inside and outside air flowing in the upstream side of the blowing fan 430 , Outside air inlet (421,422) is provided.

The main blower 400 includes a scroll case 410 in which the blowing fan 430 is installed, and an intake duct that is assembled on one side of the scroll case 410 and has an internal air inlet 421 and an external air inlet 422 It consists of 420.

Inside the intake duct 420, an internal/external air conversion door 425 for opening and closing the internal and external air inlets 421 and 422 is installed to open the internal air inlet 421 in the internal air mode, and the external air inlet 422 in the external air mode. ) Will be opened.

Meanwhile, in the main blower 400, the outlet of the scroll case 410 is connected to the inlet 310 side of the air conditioning case 300.

Therefore, when the blowing fan 430 is operated, air is sucked through the internal air inlet 421 or the external air inlet 422 opened by the internal/external air conversion door 425, and the air sucked in this way is the scroll case 410 ) Is blown to the air conditioning case 300.

4 schematically shows the main blower 400.

In addition, in the center mounting type air conditioner, as shown in FIG. 11, in a state in which the scroll case 410 of the main blower 400 is disposed on the upper side of the evaporator 140, the inlet 310 side of the air conditioning case 300 Will be connected.

In addition, an intake duct 420 assembled on one side of the scroll case 410 (in the axial direction of the blowing fan 430) is shown in FIG. 7.

7 is a cross-sectional view of the intake duct, an internal air inlet 421 and an external air inlet 422 are formed, and an internal and external air conversion door 425 for opening and closing the internal and external air intakes 421 and 422 is installed inside It is structured.

The air introduced through the internal and external air inlets 421 and 422 is sucked into the blowing fan 430 of the scroll case 410 through the outlet 423 of the intake duct 420.

In addition, the auxiliary blower 500 is provided with a blowing fan 510 therein, and is installed on the upstream side of the heater core 210 of the warm air passage P2 to blow wind toward the warm air passage P2. .

On the other hand, the auxiliary blower 500 may be configured to suck inside or outside air.

In addition, the auxiliary condenser 120 is installed in the refrigerant circulation line R between the main condenser 110 and the expansion means 130, and the refrigerant discharged from the main condenser 110 and the evaporator 140 Air heading to, that is, the outside air flowing into the outside air inlet 422 is heat-exchanged.

The auxiliary condenser 120 is composed of an air-cooled heat exchanger.

On the other hand, the auxiliary condenser 120 can be installed at any position if it is upstream of the evaporator 140 in the air flow direction, but in the present invention, it is modularized and arranged on the lower side of the cowl top cover 601.

Specifically, the auxiliary condenser 120 is installed on the outside air inlet 422 side of the main blower 400.

In addition, at one side of the outside air inlet 422, an outside air outlet 650 for discharging the air that has passed through the auxiliary condenser 120 to the outside, and an opening/closing door 660 for opening and closing the outside air outlet 650 are provided. do.

Therefore, in the heating mode, the opening/closing door 660 closes the outdoor air outlet 650 and operates in the outdoor air mode, so that the air (outdoor air) whose temperature has risen while passing through the auxiliary condenser 120 is transferred to the evaporator 140. By supplying, it is possible to solve the conception problem that occurs in the evaporator 140 under outside temperature conditions of 0°C or less, and improve the heating performance and efficiency by raising the PH line of the refrigeration cycle.

In addition, in the cooling mode, the opening/closing door 660 opens the outside air outlet 650 and operates in the betting mode, thereby discharging the air whose temperature has risen while passing through the auxiliary condenser 120 to the outside of the vehicle. This deterioration can be prevented.

In the drawing, an internal/external air conversion door 425 for opening and closing the internal and external air intake ports 421 and 422 and an opening/closing door 660 for opening and closing the external air outlet 650 are shown integrally. It is also possible to operate together, or it may be configured to operate separately by installing the internal and external switching door 425 and the opening and closing door 660 in a concentric shape.

In addition, as shown in FIG. 7, the internal/external air conversion door 425 may be installed in the intake duct 420, and an external air outlet 650 and an opening/closing door 660 may be installed in a separate condenser module 600.

7 is configured by modularizing the auxiliary condenser 120, and a condenser module 600 in which the auxiliary condenser 120 is built-in is installed at the outside air inlet 422 of the main blower 400.

The condenser module 600 is disposed under the cowl top cover 601 mounted between the windshield glass 602 of the vehicle and the engine hood (not shown) and connected to the outside air inlet 422, thereby The outside air sucked through the cowl top cover 601 is guided and introduced into the outside air inlet 422.

In this case, a grill hole 603 is formed in the cowl top cover 601 to allow the inflow of outside air.

The condenser module 600 is installed to connect the cowl top cover 601 and the outside air inlet 422 in communication, and the auxiliary condenser 120 is installed inside the heating passage P3 and the auxiliary condenser A condenser case 610 in which a bypass passage P4 for bypassing 120 is formed, and is installed inside the condenser case 610, the heating passage P3 and the bypass passage P4 It consists of an adjustment door 620 for adjusting the opening degree.

At this time, the inlet side of the condenser case 610 is connected in communication with the grill hole 603 of the cowl top cover 601, and the outlet side is connected in communication with the outside air inlet 422.

Therefore, the outside air introduced into the grill hole 603 of the cowl top cover 601 flows into the condenser case 610 and is heated while passing through the auxiliary condenser 120 through the heating passage P3 to increase the temperature. After that, it is introduced into the outside air inlet 422.

Of course, when the control door 620 closes the heating passage P3, the outside air flowing into the grill hole 603 of the cowl top cover 601 is the bypass passage P4 of the condenser case 610. After bypassing the auxiliary condenser 120 through ), it is introduced into the outside air inlet 422.

Meanwhile, the internal/external air conversion door 425 of the intake duct 420 and the control door 620 of the condenser case 610 can be variously configured, for example, the internal/external air conversion door 425 and the control door. The 620 may be configured to interwork with each other, or may be configured integrally.

In addition, at one side of the heating passage P3 of the condenser case 610, an outside air outlet 650 for discharging the outside air that has passed through the auxiliary condenser 120 to the outside of the vehicle or engine room, and the outside air outlet 650 are provided. An opening and closing door 660 to open and close is provided.

The outside air outlet 650 is communicated with the outside of the vehicle or the engine room or drainage passage through the duct 651.

Due to this, in the cooling mode, the air whose temperature has risen while passing through the auxiliary condenser 120 is discharged to the outside of the vehicle, the engine room or the drainage passage through the outside air outlet 650, thereby preventing the cooling performance from deteriorating. In the cooling mode, the control door 620 closes the heating passage P3 and the opening door 660 opens the outside air outlet 650.

On the other hand, when the air passing through the auxiliary condenser 120 is discharged to the engine room or the drainage channel through the outside air outlet 650, the problem of the discharged air flowing backward to the upstream side of the auxiliary condenser 120 can be prevented. I can.

In addition, a drain part 611 is formed on the bottom of the condenser case 610 to discharge water (rainwater, etc.) flowing into the condenser case 610.

The drain part 611 is formed at the bottom of the heating passage P3 on the upstream side of the auxiliary condenser 120 in the condenser case 610, and thus rainwater flows into the condenser case 610 through the cowl top cover 601. When introduced, it is smoothly drained through the drain part 611.

In addition, a blower 630 is installed on the downstream side of the auxiliary condenser 120 in the heating passage P3 of the condenser case 610, and when the blower 630 is operated, outside air is the heating passage of the condenser case 610 It is sucked into (P3) and passed through the auxiliary condenser (120).

Of course, since the condenser module 600 is disposed under the cowl top cover 601, a driving wind flows into the condenser case 610 through the cowl top cover 601 when the vehicle is driven.

That is, when the vehicle is driven, the running wind can be used, and thus the blower 630 can be selectively stopped.

In addition, while the condenser module 600 is disposed under the cowl top cover 601 and is located outside the engine room, it is possible to prevent contamination of the engine room from entering the vehicle interior, and the auxiliary condenser 120 It is possible to improve vehicle mountability and common use by simplifying and modularizing like the condenser module 600.

And, in the inside of the condenser case 610, there is formed a partition wall 615 partitioning the bypass passage (P4) and the heating passage (P3), at this time, the bypass passage (P4) and the heating passage ( P3) is arranged vertically with the partition wall 615 interposed therebetween, as shown in FIG. 8.

That is, the bypass passage P4 is formed on the upper side of the partition wall 615, and the heating passage P3 is formed on the lower side of the partition wall 615.

On the other hand, as another embodiment of the condenser module 600, the heating passage (P3) and the bypass passage (P4), as shown in Figs. 12 to 14, the left and right ( It is arranged in the left and right directions in the width direction of the vehicle.

That is, the heating passage P3 is formed on the left side of the old wall 615 and the bypass passage P4 is formed on the right side of the partition wall 615.

In the structure as shown in FIG. 13, two doors 625 and 626 are installed, and one door 625 is installed on the downstream side of the auxiliary condenser 120 of the heating passage P3, and the air passing through the auxiliary condenser 120 Control the flow direction of

That is, in the heating mode, the air that has passed through the auxiliary condenser 120 is controlled to flow to the outside air inlet 422, and in the cooling mode, the air that has passed through the auxiliary condenser 120 is controlled to be discharged to the outside of the vehicle or the engine room. Is done.

In addition, the other door 626 is installed on the side of the bypass passage P4, and when the door 626 is opened, outside air flows into the bypass passage P4, thereby bypassing the auxiliary condenser 120. After passing, it flows to the outside air inlet 422.

On the other hand, the present invention can solve the disadvantages of the heat pump system while having the same configuration as the existing air conditioner, and can reduce weight and manufacturing cost. (Water pump 200, water cooling radiator 220, cooling water circulation line (W) The configuration is a configuration that is installed on an eco-friendly vehicle and is not an additional part)

Hereinafter, the operation of the vehicle air conditioner according to the present invention will be described.

First, the refrigerant circulation process will be described. The high-temperature, high-pressure gaseous refrigerant compressed and discharged from the compressor 100 flows into the main condenser 110.

The gaseous refrigerant introduced into the main condenser 110 exchanges heat with the cooling water circulating in the cooling water circulation line W, and in this process, the refrigerant is cooled and changes into a liquid phase.

In addition, the cooling water circulating in the cooling water circulation line (W) is heated by heat exchange with the high-temperature refrigerant of the main condenser 110 and supplied to the heater core 210, and the refrigerant supplied through the heater core 210 Heats the air flowing through the hot air passage P2 of the air conditioning case 300.

Subsequently, the liquid refrigerant discharged from the main condenser 110 is introduced into the auxiliary condenser 120 and further cooled (supercooled) through heat exchange with outside air, and then introduced into the expansion means 130 to expand under reduced pressure. do.

The refrigerant expanded under reduced pressure in the expansion means 130 becomes an atomization state of low temperature and low pressure and is introduced into the evaporator 140, and the refrigerant introduced into the evaporator 140 is a cold air passage (P1) of the air conditioning case 300 It evaporates by exchanging heat with the flowing air and at the same time cools the air by an endothermic action by the latent heat of evaporation of the refrigerant.

Thereafter, the low-temperature, low-pressure refrigerant discharged from the evaporator 140 flows into the compressor 100 and then recycles the above-described cycle.

Subsequently, the air flow process in the cooling mode and the heating mode will be described.

end. Cooling mode (Fig. 5, Fig. 8)

In the cooling mode, as shown in Figs. 5 and 8, the internal/external air conversion door 425 is converted to an air-conditioning mode in which the air inlet 421 is opened, and the opening and closing door 660 opens the external air outlet 650, and , The control door 620 is to close the outlet of the heating passage (P3).

In addition, the first opening and closing door 331 closes the first outlet 330, the second opening and closing door 341 opens the second outlet 340, and the temperature control door 350 is a cold air passage (P1) Will be opened.

In addition, the main blower 400 and the auxiliary blower 500 are operated.

Accordingly, due to the operation of the main blower 400, air is introduced through the air inlet 421 and then blown to the air conditioning case 300.

The bet blown into the air conditioning case 300 exchanges heat with the evaporator 140 in the process of passing through the cold air passage P1 to change into cold air, and is then discharged into the vehicle through the air outlet 320 to cool the interior of the vehicle. Is done.

In addition, the outside air flowing toward the outside air inlet 422 through the condenser case 610 heats up while passing through the auxiliary condenser 120 to increase the temperature, and then discharges it to the outside of the vehicle or the engine room through the outside air outlet 650 do.

In addition, due to the operation of the auxiliary blower 500, the air blown from the auxiliary blower 500 to the hot air passage P2 is heated while passing through the heater core 210 to be converted into hot air, and the hot air is It is discharged to the outside through the second discharge port 340.

Meanwhile, in the cooling mode, the refrigerant condensed while being cooled in the main condenser 110 is supercooled by heat exchange with outside air in the auxiliary condenser 120 and then supplied to the expansion means 130 and the evaporator 140. , Cooling performance can be further improved.

I. Heating mode (Fig. 6, Fig. 9)

In the heating mode, as shown in FIGS. 6 and 9, the internal/external air conversion door 425 is converted to an outdoor air mode in which the outdoor air inlet 422 is opened, and the opening door 660 closes the outdoor air outlet 650, and , The control door 620 closes the bypass passage P4.

In addition, the first opening and closing door 331 opens the first outlet 330, the second opening and closing door 341 closes the second outlet 340, and the temperature control door 350 is a cold air passage (P1) Will be closed.

In addition, the main blower 400 and the auxiliary blower 500 are operated.

Therefore, due to the operation of the main blower 400, the outside air flowing toward the outside air inlet 422 through the condenser case 610 passes through the auxiliary condenser 120 to heat exchange and heat exchange to increase the temperature, and then the air conditioning case ( 300).

The outside air blown into the air conditioning case 300 is exchanged with the evaporator 140 in the process of passing through the cold air passage P1 to be converted into cold air, and then discharged to the outside through the first outlet 330.

In addition, due to the operation of the auxiliary blower 500, the air blown from the auxiliary blower 500 to the hot air passage P2 is heated while passing through the heater core 210 to be converted into hot air, and the hot air is air It is discharged into the vehicle interior through the discharge port 320 to heat the interior of the vehicle.

In this way, in the heating mode, since the air whose temperature has risen while passing through the auxiliary condenser 120 is supplied to the evaporator 140, it solves the problem of condensation occurring in the evaporator 140 in the outside temperature condition of 0°C or less, and the refrigeration cycle By raising the PH line in, heating performance and efficiency are improved.

On the other hand, in the mild mode, as shown in FIG. 10, some of the outside air introduced into the condenser case 610 passes through the auxiliary condenser 120 and exchanges heat to increase the temperature, and then through the outside air outlet 650. It is discharged to the outside of the vehicle or to the engine room, and a part of the auxiliary condenser 120 is bypassed through the bypass passage P4 and then introduced into the outside air inlet 422 and blown into the air conditioning case 300.

100: compressor 110: main condenser
120: auxiliary condenser 130: expansion means
140: evaporator 200: water pump
210: heater core 220: water cooling radiator
230: directional valve 300: air conditioning case
310: inlet 320: air outlet
330: first outlet 331: first opening and closing door
340: second outlet 341: second opening and closing door
350: temperature control door 400: main blower
410: scroll case 420: intake duct
421: internal air inlet 422: outdoor air inlet
425: internal/external switching door 430: blower fan
500: auxiliary blower 510: blower fan
600: condenser module 610: condenser case
611: drain part 615: separation wall
620: control door 630: blower
650: outside air outlet 660: opening door

Claims (11)

The compressor 100 installed in the refrigerant circulation line R, the main condenser 110, the expansion means 130, the evaporator 140, the air conditioning case 300 in which the evaporator 140 is built, and the air conditioning case Including a main blower 400 provided connected to 300 and provided with a blowing fan 430 therein, and provided with internal and external air inlets 421 and 422 for introducing internal and external air into the upstream side of the blowing fan 430 In the vehicle air conditioner made,
In the refrigerant circulation line R between the main condenser 110 and the expansion means 130, an auxiliary condenser 120 for heat exchange between the refrigerant discharged from the main condenser 110 and the outside air flowing into the outside air inlet 422. ) Is installed,
On the side of the outside air inlet 422 of the main blower 400, the outside air introduced from the outside of the vehicle is guided to the outside air inlet 422, and a condenser module 600 in which the auxiliary condenser 120 is embedded is installed. ,
The condenser module 600 is disposed under the cowl top cover 601 of the vehicle and introduces the outside air sucked through the cowl top cover 601 to the outside air inlet 422,
The condenser module 600,
It is installed to connect the cowl top cover 601 and the outside air inlet 422 in communication, and a bypass bypassing the heating passage P3 in which the auxiliary condenser 120 is installed and the auxiliary condenser 120 inside A condenser case 610 in which passages P4 are formed, respectively,
An air conditioner for a vehicle, comprising an adjustment door 620 installed inside the condenser case 610 to adjust the opening of the heating passage P3 and the bypass passage P4. delete delete The method of claim 1,
On one side of the heating passage P3 downstream of the auxiliary condenser 120, an outdoor air outlet 650 for discharging the outside air passing through the auxiliary condenser 120 to the outside of the vehicle or engine room, and the outside air outlet 650 are opened and closed. Vehicle air conditioning apparatus, characterized in that the opening and closing door (660) is provided. The method of claim 1,
A vehicle air conditioner, characterized in that a drain part 611 is formed on the bottom of the condenser case 610 to discharge water flowing into the condenser case 610. The method of claim 1,
An air conditioner for a vehicle, characterized in that a blower 630 for sucking outside air through the heating path P3 is installed at a downstream side of the auxiliary condenser 120 in the heating path P3 of the condenser case 610. The method of claim 1,
In the inside of the condenser case 610, a partition wall 615 partitioning the bypass passage P4 and the heating passage P3 is formed,
The by-pass passage (P4) and the heating passage (P3) is an air conditioner for a vehicle, characterized in that arranged up and down with the partition wall (615) therebetween. The method of claim 1,
In the inside of the condenser case 610, a partition wall 615 partitioning the bypass passage P4 and the heating passage P3 is formed,
The heating passage (P3) and the bypass passage (P4), the vehicle air conditioner, characterized in that arranged left and right with the partition wall (615) therebetween. The method of claim 1,
Inside the air conditioning case 300, a heater connected through the main condenser 110 and the cooling water circulation line W to heat the air in the air conditioning case 300 using a heat source of the main condenser 110 The core 210 is installed,
The main condenser 110 heat-exchanging the refrigerant discharged from the compressor 100 and the cooling water circulating in the cooling water circulation line W with each other. The method of claim 9,
In the cooling water circulation line (W), a water cooling radiator (220) for cooling vehicle electrical equipment, and a water pump (200) for circulating the cooling water is installed. The method of claim 9,
The air conditioning case 300 includes a cold air passage P1 in which the evaporator 140 is installed, a hot air passage P2 in which the heater core 210 is installed, and the cold air passage P1 and the warm air passage An air discharge port 320 is formed downstream of the mixing area MC where (P2) is joined to discharge air into the vehicle interior,
A vehicle air conditioner, characterized in that an auxiliary blower 500 having a blowing fan 510 therein is installed on the upstream side of the heater core 210 of the warm air passage P2 to blow wind toward the warm air passage P2. .

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